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How to find all occurrences of an element in a list?
..._itertools.locate finds indices for all items that satisfy a condition.
from more_itertools import locate
list(locate([0, 1, 1, 0, 1, 0, 0]))
# [1, 2, 4]
list(locate(['a', 'b', 'c', 'b'], lambda x: x == 'b'))
# [1, 3]
more_itertools is a third-party library > pip install more_itertools.
...
LPCSTR, LPCTSTR and LPTSTR
... C types instead of C++ types, and/or has C linkage via extern "C". Apart from that, yeah, it definitely should need either the "pointer" bit, or specific description as a C string.
– Justin Time - Reinstate Monica
Sep 11 '19 at 18:39
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Is there a null-coalescing (Elvis) operator or safe navigation operator in javascript?
...f the operator is falsy. Note that the result of myVariable3 below differs from myVariable3 above.
const myVariable = a?.b?.c || 'Some other value';
// Evaluates to 'Some other value'
const myVariable2 = null || 'Some other value';
// Evaluates to 'Some other value'
const myVariable3 = '' || 'Some...
Bootstrap: Position of dropdown menu relative to navbar item
...up, just add the class "dropup"
and remove the class "dropdown" if exists from the same div.
<div class="btn-group dropup">
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Remove plot axis values
...swer this question. The reputation requirement helps protect this question from spam and non-answer activity.
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String to object in JS
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It depends where the data comes from. Some people are obsessed with security. If you control your data, you can be more pragmatic in finding solutions. Or do you have a burglar-proof door between your kitchen and living room?
– Philipp...
Check if a Bash array contains a value
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Dennis is right. From the bash reference manual: "If the word is double-quoted, ... ${name[@]} expands each element of name to a separate word"
– mkb
Sep 10 '10 at 16:09
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Fastest way to check if a value exists in a list
...ay to do it.
You can also consider using a set, but constructing that set from your list may take more time than faster membership testing will save. The only way to be certain is to benchmark well. (this also depends on what operations you require)
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Calling constructors in c++ without new
...gnment();
prove_copy_constructor_is_called();
return 0;
}
Output from gcc 4.4:
TEST: direct
char constructor: direct
destructor
TEST: assignment
char constructor: assignment
destructor
TEST: prove_copy_constructor_is_called
char constructor: prove_copy_constructor_is_called
Copy constru...
Why do you use typedef when declaring an enum in C++?
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Holdover from C.
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